Apparatus and method thereof for improvement of stereophonic sou

Electrical audio signal processing systems and devices – Binaural and stereophonic – Hearing aid

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H04R 502

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active

050052012

ABSTRACT:
An apparatus and method for improvement of stereophonic sound. A source of stereophonic sound is provided with two internal loudspeakers and external access to the stereophonic signal. A "wall of sound" effect is achieved by coupling of the sterophonic signal to at least two external loudspeakers with the internal loudspeakers being fed a mixture of the sterophonic signal at reduced power.

REFERENCES:
patent: 3417203 (1968-12-01), Hafler
patent: 3933219 (1976-01-01), Butler
patent: 3934092 (1976-01-01), Csicsatka
patent: 4002835 (1977-01-01), Bumber
patent: 4308423 (1981-12-01), Cohen
patent: 4355203 (1982-10-01), Cohen
patent: 4410761 (1983-10-01), Schickedanz
patent: 4524451 (1985-06-01), Watanabe
patent: 4646349 (1987-02-01), Puls
patent: 4704728 (1987-11-01), Scheiber
Allied Electronics, Catalog 270, 1968, p. 95, Item 20 B9131ZF.
Montgomery Ward Catalog, Fall & Winter 1981, p. 1020, Item H(62C3245R).
University Loudspeakers, Inc., Ad for TMS-2, p. 34 of Radio & TV News, Dec., 1958.

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